Engine-cooling and car-heating system.



H. a. CI-IA TAIN. ENGINE COOLING AND CAR HEATING SYSTEM.

' APPLICATION FILED NOV- Il, 1914.

Patented J an. 4, 1916.

Witnesses Inventor. HenriGC/h tain, b5 M V His flit 0&3.

, and hot weather, and some means for preventing in cold weather thefreezing of the HENRI, Gr. GHZATAIN, OF ERIE, PENNSYLVANIA, ASSIGNOR T0GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

ENGINE-COOLING AND CAR-HEATING SYSTEM.

Specification-of Letters Patent.

Patented Jane, 1916.

Application filed November 17, 1914. SeriaI No. 872,621. h

To all whom it may concern:

Be it known that I, HENRI G. CHATAIN, a citizen of the United States,residing at Erie, county of Erie, State of Pennsylvania, have inventedcertain new and useful. Improvements in Engine-Cooling and Car- HeatingSystems, of which the followingis a specification.

The present invention relates F to motor cars in which an internalcombustion engine is employed for propelling purposes, and moreespecially to such cars where an engine drives an electric generator andthe latter supplies current-to motors mounted on one or more of the cartrucks. The engine .and generator are mounted in the front end of thecar, the remainder being devoted to passengers, baggage, etc. In such anequip-" ment it is necessary to provide a circulating system for coolingthe engine both ln'cold coolingwater in the radiator and connectingpipes when the engine is idle. It is also necessary to provide a heatingsystem for the car.

The object of the present invention is to provide an improved enginecooling and car heating system. 5

For a consideration of what I believe to be novel and my invention,attention is directed to the accompanying description and claimsappended thereto.

the car and driving an air pump, the latter supplying air for starting,braking, etc. The radiator for cooling the circulating water for theengine jacket comprises two principal sections, one on the right-handside and the other on the left hand side of the car, said radiator being"located above the roof and corresponding approximately in shape to thecurvature thereof. One of these sections is connected with the set ofengine cylinders and the other with the set of engine cylinders 12. Eachradiator section comprises. an upper header 14 lo- I cated at about thecenter of the car roof and a lower'header 15 located near the side ofthe car. Connecting these headers are outer cooling tubes 16 and innercooling tubes 17.

Only two of these tubes on each side are shown, but it will beunderstood that a multiphcity of such tubes will be used and that theywill preferably be provided with heat radiating fins in orderto increasethe effective radiation thereof. The lower headers 15 are connected tothe engine cylinder by the con-* duits 18. The upper headers areconnected to the engine cylinders by the conduits 18. Connecting thelower ends of-the conduits 18 is an equalizing pipe 19. Connected at thelowest point of this equalizing pipe is a drain pipe and filling pipe20. This drain pipe may be connected with either side of the radiator bymeans of "the three-Way valve 21. j

22 indicates filling-openings in the upper headers. iary engine 13 isconnected to the upper headers by pipe 23 which has a branch 24 leadingto each header. A three-way valve 25 is arranged in'these pipes so thatthe jacket of engine 13 may be connected to either headervas desired.

26 indicates a pipe connecting the cooling jacket of the engine 13 tothe equalizing pipe 19.' In, this pipe is the valve 27.

The cooling jacketof the auxilhold the water from the radiator and tolimit the level below which the water can be drained in the pipe 29. Thepipe 29 at its lowest point is provided with a drain pipe 31 controlledby the cross valve 32. Connected with the top of the tank is the pipe 33by' means of which compressed air may be led to the tank from theair'pipe 34. In the pipe 33 is a suitable valve 35.

36 indicates a safetv valve which may be set for any suitable pressure.

The arrangement so far described constitutes the engine cooling systemproper.

37 indicates a heater or boiler of any suitable construction for heatingthe water used in the car heating coils, and 37 is a stack therefor. Twosets of heating coils or pipes are shown, the set38 being in thepassenger pipe 47 is the expansion tank 48. This tank is provided with agage glass 49 and asafety valve 50.- Connectedwith the tank is a drainpipe 51 having a valve 52 therein. Connected to this pipe 51 is asuitable pressure gage 53. 54 is a drain. pipe and filling pipe havingtherein a valve 55. At 40 and 41" are valves for shutting offthe'heating coils from the heaters.- The arrangement described in thisparagraph constitutes the hot water heating "system for the car.

At times it is desirable to connect the heater with the engine jacketsso as to keep the engine warm when idle, and, in cold weather, toprevent the water in the jackets from freezing, thus avoiding thenecessity of draining the water therefrom. It may also be desirable atcertain times, as for example in mild weather, to use a portion of thewater from the engine jackets for heating the car. ll have accordinglyprovided a novel arrangement for connecting the engine cooling-system tothe heater, and for also connecting the heating coils to the enginecooling system. To this end I provide a pipe 56 connecting the pipe 47with the pipes 23 and 18. These connections are controlled by thevalves'56, 57, 58 and 59 respectively. Connecting the equalizing pipe 19with the connector 44 is a pipe 60 having a valve 61 therein.

1 The operation of this system is as follows:

1 Under normal running conditions the valves 56 and 61 will be closed,thus separating the engine cooling system from the heating system.Either or both may then be operated wholly independently of the other.The valves 57, 58 and 59 will also preferably be -closed. Under theseconditions the circulation in the heating system and in the enginecooling system is as indicated by the full line arrows, and will beobvious without further explanation.

' When in freezing weather the car is to be left standing for some timeand the engine is idle, the radiator sections are drained into the tank28 by opening the valve 30. If now it is desired to connect the engineto the car heating system to keep the engine warm, the valves 56 and 61are opened and also valves 57, 58 and 59. Hot water from the heatingsystem then flows through the engine jackets as indicated by the brokenline arrows. That is, water flows from the pipe47 which connects theheater to the equalizing tank 48, through pipe 56, valves 57, 58 and 59,down through the jackets of theengines 10 to the equalizing pipe 19 anddown through pipe 23 to the acket of the auxiliary engine 13, thence bypipe 26 to the equalizing pipe. From the equalizing pipe the water flowsthrough pipe 60, valve 61, and connector 44 to the heater. It will benoted that the connection to each set of cooling jackets is controlledby a separate valve 57, 58 or 59 so that if desired allthe jackets neednot be connected to the heating system at the same time. Under somecircumstances this arrangement is very useful, as it enables a set .ofjackets to be cut out in case of an emergency requiring it. When the caris to be put into'use again after standing idle, the engine jackets aredisconnected from the heater (if connected thereto) and the water fromthe tank 28 is forced back into the radiator sections by opening valve35 and admitting compressed air from pipe 34 to the top. of the tank.

It maysometimes be desirable, as for example, in mild weather, toconnect the car heating coils to the engine jackets to heat the car. Forthis purpose the valves 40 and 41 will preferably be closed so as todisconnect the heating coils from the heater and the valves 56, 57, 58and 59 opened. This permits water to flow from pipes 18 and 23 throughpipe 56 and down pipe 47 to the heating coils. The water then returnsfrom the heating coils to the engine jackets by way of valve 61, pipe60, and equalizing connection 19. It will be clear that instead ofconnecting all three sets of engine jackets to the heating coils Imayconnect only one, or I may connect two, as the connections are eachcontrolled by a separate valve as already pointed out.

The heating system may be filled by connecting a suitable source ofwater supply under pressure to the pipe 54. Likewise the system may bedrained through this pipe.

The cooling system may be filled through pipe 20, the three-way valvebeing turned to fill first one side of the system and then the other. Ifthe source of water supply available is not of sufiicient pressure tofill this system from below, it may be filled through the fillingopening 22. This pipe may also be -used'to drain the system.

It will be understood that the different valves, as 56, 57, 58, 59, 61,etc., are all regulable and under the different conditions of operationmay be opened to any desired extent so as to obtain the desireddistribution of thewater.

In accordance with the provisions of the patent statutes, I havedescribed the principle of operation of my invention, together with theapparatus which ll now consider to represent the best embodimentthereof; but

I desire to have it understood that the apparatus shown is onlyillustrative, and that the invention can be carried out by other means.v

What I claim as new, and desire to secure by Letters Patent of theUnited States, is

1. In combination, an engine having a cooling jacket, a radiator locatedabove the engine for dissipating the heat of the fluid circulatingthrough the jacket, a heater, a heating system connected thereto, atank, and valved conduit means for draining the radiator into the tankand connecting the cooling jacket to the heating-system.

2. In combination, an engine having a cooling jacket, a radiator locatedabove the engine, pipes connecting the engine jacket thereto, a heater,a hot water heating system connected thereto comprising circulatingcoils, an expansion tank located above the same, and a pipe connectingthe expansion tank to the circulating coils; anda valved pipe connectingthe last named pipe to the first named pipes at points between the topof the engine and the radiator.

3. In combination, an engine having a cooling jacket, a radiator locatedabove the engine, pipes connecting the engine jacket thereto. a heater,a hot water heating system connected thereto, comprising circulatingcoils, an expansion tank located above the same, and a pipe connectingthe expansion tank to the circulating coils; a valved pipe connectingthe last named pipe to the first named pipes at points between the topof the engine and the radiator, a second tank, and a valved conduitconnecting the second tank to the radiator for draining the same.

4. In combination, an engine having a cooling jacket, a radiator locatedabove the engine for dissipating the heat of the fluid circulatingthrough the jacket, a heater, a heating system connected. thereto, atank, valved conduit means for draining the radiator into the tank andconnectingthe cooling jacket to the heating system, and a pipe forconveying air under pressure to said tank to force the cooling mediumback into the radiator.

' conduits at points between the top of the engine and the radiator, andvalves in said pipes controlling the connection to each set ofcylinders.

6. In combination, an engine having a cooling jacket, a radiator locatedabove the engine, pipes connecting the engine jacket thereto, a heater,a hot Water heating system connected thereto comprising circulatingcoils, an expansion tank. located above the same, and a pipe connectingthe expansion tank to the circulating coils; a valved pipe connectingthe last named pipe to the first named pipes at points between the topof the engine and the radiator, and means for disconnecting the heaterfrom the heating system.

7. In a combined car heating and engine cooling system, the combinationof an engine,having two sets of cylinders with cooling jackets, aradiator comprising two sections located above the engine, conduitsconnecting the cooling jackets of one set of cyl inders toeach radiatorsection, a heater, a heating system connected thereto, a tank, a pipefor draining the radiator intothe tank, pipes connecting the heatingsystem to the' conduits at a point between the top of the engine and theradiator, valves in said pipes controlling the connection to each set ofcylinders, and valves whereby the heater may be disconnected from theheating system.

In witness whereof, I have hereunto set my hand this 13th day ofNovember, 1914. HENRI G. CHATAIN. Witnesses:

(l. T. FOUCIIE, MARY ETHEL PORTER.

